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Regulator Circuits
Regulators:  #'s - A       B - G       H - Q       R - S       T  - Z


Last Updated: October 24, 2017 02:55 PM
Circuits Designed by Dave Johnson, P.E. :

LM317 adjustable voltage regulator used in Battery Eliminator Circuit - If you use a 1.5v or a 3v battery powered MP3 player for long periods of time, you may get tired of constantly changing batteries.  Some older players do not work will NiMH
rechargeable batteries so changing out batteries can get expensive.  The circuit be . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2005

Capacitance Proximity Switch
Draws very low power - Ideal for battery-powered applications
6 Models Available - Call 806-368-7747


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Low 25uVrms Noise Linear Regulator Paralleled for Higher Output Current -  The LT1762 series are micropower, low noise, low dropout regulators.  The devices are capable of supplying 150mA of output current with a dropout voltage of 270mV.  Designed for use in battery-powered systems, the low 25μA quiescent current makes them an ideal choice.  Quiescent current is well controlled; it does not rise in__ Linear Technology/Analog Devices App Note, Apr 22, 2011

Low battery cut-off for a car or truck -  Also acts as a Master On / Off Switch.  NOW, Also a New P-Mos Version.  Supplies Positive voltage to grounded devices.   __ Designed by G.L. Chemelec

Low Noise Low Ripple Triple Output Supply Providing 1V, 8A & 1.8V, 5A & 1.5V, 3A -  The LT3070 is a low voltage, UltraFast transient response linear regulator.  The device supplies up to 5A of output current with a typical dropout voltage of 85mV.  A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS.  The LT3070’s high bandwidth permits the use of low ESR ceramic capacitors, saving__ Linear Technology/Analog Devices App Note, Apr 22, 2011

Low Noise Varactor Biasing with Switching Regulator -  AN85 Telecommunication, satellite links and set-top boxes all require tuning a high frequency oscillation.  The actual tuning element, a varactor diode, requires high voltage bias for operation.  The high voltage bias must be free of noise to prevent unwanted oscillator outputs__ Linear Technology/Analog Devices

Low Noise Varactor Biasing with Switching Regulators: Vanquishing Villainous Vitiators Vis-ŕ-Vis Vital Varactors -  Linear Technology AN85 __ Designed by Jim Williams - Aug 1st, 2000

Low-cost switcher converts 5 to 24V -  02/16/98 EDN Design Ideas:  (File contains several circuits, scroll to find this one)  __ Circuit Design by Paul C Florian, Plano, TX

Low-dropout linear regulators Deliver constant currents -  05/11/06 EDN Design Ideas:  High-side current source uses a positive-output linear voltage regulator to deliver 25 mA __ Circuit Design by Budge Ing, Maxim Integrated Products Inc, Sunnyvale, CA

LT1074/LT1076 Design Manual -  AN44 Linear Technology This note discusses the use of the LT107) 4 and LT107) 6 high efficiency switching regulators.  These regulators are specifically designed for ease of use.  This App Note is intended to eliminate the most common errors that customers make when using switching regulators__ Linear Technology/Analog Devices

LT1339 Design Manual -  AN73 Linear Technology This App Note contains detailed design information to allow the reader to craft switching regulators using the LT1339 high power synchronous DC/DC converter.  The note provides expanded pin descriptions for the LT1339 as well as easy-to-use graphical tools__ Linear Technology/Analog Devices

LT1534 UltraLow Noise Switching Regulator Controls EMI -  DN178 Design Notes __ Linear Technology/Analog Devices

LT1580 Fast Response Low Dropout Regulator Achieves 0.4 Dropout at 4 Amps -  DN119 Design Notes __ Linear Technology/Analog Devices

LT1777 High Voltage Low Noise Buck Switching Regulator -  DN212 Design Notes__ Linear Technology/Analog Devices

LT3009 3μA IQ, 20mA Low Dropout Linear Regulators-Video Product Brief -  The LT3009 Series are micropower, low dropout voltage (LDO) linear regulators.  The devices supply 20mA output current with a dropout voltage of 280mV.  No-load quiescent current is 3μA.  Ground pin current remains at less than 5% of output current as load increases.  in shutdown, quiescent current is less than 1μA.  __ Linear Technology/Analog Devices App Note, Tony Armstrong-Director of Product Marketing Dec 7th 2009

LT3015 1.5A, Low Noise, Negative LDO with Precision Current Limit-Video Product Brief -  The LT®3015 series are low noise, low dropout, negative linear regulators with fast transient response.  The devices supply up to 1.5A of output current at a typical dropout voltage of 310mV.  Operating quiescent current is typically 1.1mA and drops to < 1μA in shutdown.  Quiescent current is also well controlled in dropout.  __ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer Mar 25th 2013

LT3070 5A, Low Noise, Digitally Programmable Output, 85mV LDO Regulator-Video Product Brief -  The LT3070 is a low voltage, UltraFast™ transient response linear regulator.  The device supplies up to 5A of output current with a typical dropout voltage of 85mV.  A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS.  The LT3070’s high bandwidth permits the use of low ESR ceramic capacitors, saving__ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer Jun 29th 2010

LT3080 Adjustable 1.1A Single Resistor Low Dropout Regulator-Video Product Brief -  The LT3080 is a 1.1A low dropout linear regulator that can be paralleled to increase output current or spread heat in surface mounted boards.  Architected as a precision current source and voltage follower allows this new regulator to be used in many applications requiring high current, adjustability to zero, and no heat sink.  __ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer Nov 18th 2009

LT3081 1.5A Single Resistor Rugged Linear Regulator with Monitors-Video Product Brief -  The LT3081 is a 1.5A low dropout linear regulator designed for rugged industrial applications with monitoring and protection features.  Key features of the device are the extended safe operating area, wide input and output voltage ranges, output current monitor, temperature monitor and programmable current limit.  The LT3081__ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer Jul 30th 2013

LT6110-Cable/Wire Drop Compensator with LT1965 Linear Regulator -  Click Here For A Ready To Run LTspice Circuit Demonstration The LT®6110 is a precision high side current sense with a current mode output, designed for controlling the output voltage of an adjustable power supply or voltage regulator.  This can be used to compensate for drops in voltage at a remote load due to resistance __ Linear Technology/Analog Devices App Note, Greg Zimmer Oct 17th 2013

LT8705 80V VIN / VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller-Video Product Brief -  The LT®8705 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage.  The part has integrated input current, input voltage, output current and output voltage feedback loops.  With a wide 2.8V to 80V input and 1.3V to 80V output range, the__ Linear Technology/Analog Devices App Note, Bruce Haug-Senior Product Marketing Engineer Jun 11th 2013

LTC Design Note: Dual 13A μModule regulator with digital interface for remote Monitoring & control of power -  EDN Design Ideas:  04/06/2015    Digital power system management (PSM) enables on-demand telemetry capability to set, monitor, change, and log power parameters of dual high-current __ Circuit Design

LTC Design Note: Ultrathin dual 2.5A or single 5A μModule regulator fits on the backside of PCBs, allowing space on the topside for digital ICs -  EDN Design Ideas:  09/29/2016    This versatile DC-DC excels where height is limited and multiple ganging options are advantageous __ Circuit Design

LTC1267 Dual Switching Regulator Controller Operates from High Input Voltages -  DN114 Design Notes__ Linear Technology/Analog Devices

LTC1436-PLL Low Noise Switching Regulator Helps Control EMI -  DN141 Design Notes__ Linear Technology/Analog Devices

LTC1474/LTC1475 High Efficiency Switching Regulators DraW Only 10µA Supply Current -  DN162 Design Notes__ Linear Technology/Analog Devices

LTC1702/LTC1703 Switching Regulator Controllers Set a New Standard for Transient Response -  DN206 Design Notes__ Linear Technology/Analog Devices

LTC3129 15V, 200mA Synchronous Buck-Boost Converter with 1.3uA Iq-Video Product Brief -  The LTC®3129-1 is a high efficiency, 200mA buck-boost DC/DC converter with a wide ViN and VOUT range.  it includes an accurate RUN pin threshold to allow predictable regulator turn-on and a maximum power point control (MPPC) capability that ensures maximum power extraction from non-ideal power sources such as photovoltaic__ Linear Technology/Analog Devices App Note, Bruce Haug-Senior Product Marketing Engineer Sep 23, 2013

LTC3375 8-Ch Programmable, Parallelable 1A Buck PMIC-Video Product Brief -  The LTC®3375 is a digitally programmable high efficiency multioutput power supply IC .  The DC/DCs consist of eight synchronous buck converters (iOUT up to 1A each) all powered from independent 2.25V to 5.5V input supplies.  DC/DC enables, output voltages, operating modes, and phasing may all be independently programmed over__ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer Mar 25th 2013

LTC3676 8-Output PMIC for Application Processors-Video Product Brief -  The LTC®3676 is a complete power management solution for advanced portable application processor-based systems.  The device contains four synchronous step-down DC/DC converters for core, memory, i/O, and system on-chip (SoC) rails and three 300mA LDO regulators for low noise analog supplies.  The LTC3676-1 has a ±1.5A __ Linear Technology/Analog Devices App Note, Steve Knoth-Senior Product Marketing Engineer, Power Products Oct 24th 2013

LTC3863 60V Low IQ Inverting DC/DC Controller-Video Product Brief -  The LTC®3863 is a robust, inverting DC/DC PMOS controller optimized for automotive and industrial applications.  it drives a P-channel power MOSFET to generate a negative output and requires just a single inductor to complete the circuit.  Output voltages from –0.4V to –150V are typically achievable with higher__ Linear Technology/Analog Devices App Note, Bruce Haug-Senior Product Marketing Engineer Jun 11th 2013

LTC3866 Current Mode Synchronous Controller for Sub Milliohm DCR Sensing-Video Product Brief -  The LTC®3866 is a single phase current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET switches.  it employs a unique architecture which enhances the signal-to-noise ratio of the current sense signal, allowing the use of a very low DC resistance power inductor to maximize the__ Linear Technology/Analog Devices App Note, Bruce Haug-Product Marketing Engineer May 2, 2012

LTC4222 μTCA Application Supplying 12V Payload Power to Two μTCA Slots -  The LTC4222 Hot Swap controller allows two power paths to be safely inserted and removed from a live backplane.  Using external N-channel pass transistors, board supply voltages and inrush currents are ramped up at an adjustable rate.  An i2C interface and onboard ADC allows for monitoring of current, voltage and fault status __ Linear Technology/Analog Devices App Note, Mar 26th 2010

LTC4225 μTCA Application Supplying 12V Power to Two μTCA Slots -  The LTC4225 offers ideal diode and Hot Swap functions for two power rails by controlling external series connected N-channel MOSFETs.  MOSFETs acting as ideal diodes replace two high power Schottky diodes and the associated heat sinks, saving power and board area.  Hot Swap control MOSFETs allow boards to be safely inserted __ Linear Technology/Analog Devices App Note, Apr 22, 2011

LTC4360/LTC4361/LTC4362 Overvoltage / Overcurrent Protection Controllers-Video Product Brief -  The LTC4360/LTC4361/LTC4362 overvoltage/overcurrent protection controllers safeguard 2.5V to 5.5V systems from input supply overvoltages and overcurrents.  They are designed for portable devices with multiple power supply options including wall adapters, car battery adapters and USB ports.  The LTC4360 controls an external __ Linear Technology/Analog Devices App Note, Alison Steer-Product Marketing Manager Aug 25th 2010

LTM4620 100A & 26A Thermal Performance -  Measuring the thermal performance of the LTM4620 in 100A (4 parallel LTM4620's) and 26A (single LTM4620) configurations, with and without airflow.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

LTM4620 Current Sharing  -  Current sharing test of the LTM4620.  During both startup and shutdown, current sharing between LTM4620's is smooth and well controlled.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

LTM4620 Dual 13A Regulator -  This circuit shows a simplified block diagram of the LTM4620 μModule regulator in a dual output design.  its two internal high performance synchronous buck regulators produce 1.2V and 1.5V rails, each with 13A load current capability.  The input voltage range is 4.5V to 16V.  __ Linear Technology/Analog Devices App Note, Oct 3, 2012

LTM4620 Efficiency -  Measuring the efficiency of the LTM4620 with Vin = 12, Vout = 1.2V.  At 100A load current, efficiency is above 83%.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

LTM4620 Short Protection -  Demonstration of short circuit protection of the LTM4620.  With the output shorted to ground, both current and temperature are controlled.  The circuit recovers when the short circuit is removed.  __ Linear Technology/Analog Devices App Note, Aug 15th 2012

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Regulators:  #'s - A       B - G       H - Q       R - S       T  - Z

 


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